Sun Microsystems CP2500 Environmental Monitoring

CHAPTER 2

Environmental Monitoring

The Netra CP2500 board uses an intelligent fault detection environmental

monitoring system that increases uptime and manageability of the board. The

system management controller (SMC) module on the Netra CP2500 supports the

temperature and voltage environmental monitoring functions. This chapter

describes the specific environmental monitoring functions of the Netra CP2500.

This chapter includes the following sections:

■“Environmental Monitoring Component Compatibility” on page 24

■“TypicalEnvironmental Monitoring System Application” on page 24

■“TypicalCycle From Power Up to Shutdown” on page 26

■“Hardware Environmental Monitoring Functions” on page 28

■“Adjusting the Environmental Monitoring Warning,Critical, and Shutdown

Parameter Settings on the Board” on page32

■“OpenBoot PROM Environmental Monitoring” on page 33

■“Environmental Monitoring Application Programming” on page34

Contents

Main Page Contents Page Page Page Tables Page Code Samples Page Preface How This Book Is Organized Using UNIX Commands Typographic Conventions Shell Prompts Related Documentation Online documents are available at: http://www.sun.com/documentation Documentation, Support, and Training Third-Party WebSites Sun Welcomes Your Comments Watchdog Timer Overview PICL Plug-In Module Note Page Page Watchdog Node Management Code Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page OpenBoot PROM Interface Page Environmental Monitoring Page Page Typical Cycle From Power Up to Shutdown Environmental Monitoring Protection at the OpenBoot PROM Environmental Monitoring Protection at the Operating System Level Post Shutdown Recovery Hardware Environmental Monitoring Functions Netra CP2500. Page Page Switching Power On and Off Inlet, Exhaust, and CPU Temperature Monitoring Page Note OpenBoot PROM Environmental Monitoring Warning Temperature Response at OpenBoot PROM Critical Temperature Response at OpenBoot PROM Using the show-sensors Command at the OpenBoot PROM Environmental Monitoring Application Programming Reading Temperature Sensor States Using the PICL API Using a Configuration File for Sensor Information Solaris Driver Interface Sample Application Program Page Page } Reading the CPU Temperature and Environmental Limits prtdiag command example: monitoring warning that runs when the CPU temperature exceeds the set limit. User Flash User Flash Usage and Implementation User Flash Driver OpenBoot PROM Device Tree and Properties User Flash Device Files Interface (Header) File Application Programming Interface The ioctl supported commands are listed below: Note that these ioctl commands are not supported: Structures to Use in IOCTL Arguments PROM Information Structure User Flash User Interface Structure The user flash user interface structure holds user parameters to commands such as erase. Errors Example Programs Example programs are provided in this section for the following actions on user flash device: Read Example Program Write Example Program Page Block Erase Example Program Page Sample User Flash Application Program Page Page Page Page Page Index V W